Three Balloons. Dad Balloon, Mum Balloon and Boy Balloon. Boy balloon is 18 but still lives at home. One day Dad balloon decided to have a word with his son.
Daddy Balloon: "Listen son , all your friends have now left home, do you not think you should start becoming more independent"
Boy Balloon: "You are right Dad, I should be less of a baby. I really will try to be more grown up"
That night there was a storm and Boy Ballon got scared. He woke up and went into his parents bedroom to try to get into their bed. However there wasn't any room so Boy balloon carefully untied his mothers knot and deflated her a little. There was still no room so he did the same with his Dad. Trying to squeeze in there was still no room so as a last resort he untied his own knot and deflated himself. Eventually he got into bed and fell asleep. In the morning Dad Balloon was furious. He took his son to his room to tell him off.
Dad Balloon: "Listen son, you have let me down, you have let your mother down but most of all you have let yourself down"